Stand-by consumption - Galaxy S II General

Sorry for my bad english...
However, I installed "battery monitor widget" to see consumption in stand by ... I noticed that with no background applications, consumption is almost always around 100 mA ... to you?

You are able to see current readings in mA with battery monitor? Because so far the current widget does not seem to be working with this phone.
Regular standby current reading should be 5-10mA or so on the nexus one, desire, xperia arc, desire HD, so 100 mA is way too high.
Take some over night readings to confirm. It should be much less than 100 mA.

How would you go about finding this out.
What would be classed as normal standby use - I reckon mine is using 2 - 3% per hour as long as wifi is disabled.

RogerPodacter said:
You are able to see current readings in mA with battery monitor? Because so far the current widget does not seem to be working with this phone.
Regular standby current reading should be 5-10mA or so on yje nexus one, desire, xperia arc, desire HD, so 100 mA is way too high.
Take some over night readings to confirm. It should be much less than 100 mA.
Click to expand...
Click to collapse
Can you try in your SGS2?

I'm using that app and without any application running in the background it show 1-2mA but when I start using whatsapp, FB, Twitter etc it show 20-25mA.

Thanks... other feedback?

What app, name please?

deli_gt said:
What app, name please?
Click to expand...
Click to collapse
Battery Monitor Widget by "3c06".

I use juice defender, so with everything syncing but data only enabled every 30mins, i lose 1% an hour on standby...
without i'd say about 2%, as most apps only sync every 15mins or 30min anyways, other than push email, which of course depends on how popular you are lol
Dickie

Leggenda said:
Sorry for my bad english...
However, I installed "battery monitor widget" to see consumption in stand by ... I noticed that with no background applications, consumption is almost always around 100 mA ... to you?
Click to expand...
Click to collapse
i figured out that wifi on has lower mA value than 3g. on all my ex phones it was different.
i now switched off wifi, switched off mobile data via apndroid and the mA dropped down to 5.
will now install juice defender and wait for a fix from anyone.
sent from my SGSII via Tapatalk

walda said:
i figured out that wifi on has lower mA value than 3g. on all my ex phones it was different.
i now switched off wifi, switched off mobile data via apndroid and the mA dropped down to 5.
will now install juice defender and wait for a fix from anyone.
sent from my SGSII via Tapatalk
Click to expand...
Click to collapse
on every phone i have owned, wifi was always better than 3G. on wifi the power draw stays at 6mA for me. on 3G it is higher. always been like this on my nexus one, desire, etc. nothing new.
what IS good news is that the SGS2 outputs current readings. i'm surprised any apps are able to find the current reading so soon though. usually they have to be updated for the new phone model.

Related

battery issues?

im not sure if it's just me or everyone else (who has a htc evo) but my evo runs out of battery sooo fast
itzjonjon69 said:
im not sure if it's just me or everyone else (who has a htc evo) but my evo runs out of battery sooo fast
Click to expand...
Click to collapse
Are you leaving 4G on the whole time, or turning it off when needed? Are you playing videos the entire time? Give some more info please...
i dont have 4G turned on at all, and no just simple handcent text messaging!
its not just you. im also having trouble getting the phone to last all day from 8 an to 5 pm. my cell standby gets close to 50% battery use without me doing anything and I think that kills the battery. I'm trying advanced task killer to see if it makes a difference in battery life
Sent from my HTC Evo 4G using Tapatalk
oh oh htc hero allll over again!!!! once we get this rooted we should fix some of these problems... also... I am positive companies will produce higher capacity batteries.
See what this guy did and maybe you can increase your battery life.....
http://androidforums.com/htc-evo-4g/85497-tip-trick-61-hours-24-battery-remaining.html
how much better does the battery get over time? does it typically take about 10 recharges or so to see improvement?
Chris
The other day I was at 36% after 14 hours of moderate use. I found that heavy use will drain it fairly quickly, however. Yesterday after I had been off the charger for 2 hours with 50% awake time (browsing xda and other things) my battery was down to like 80%. I did notice that the battery charges really quickly, though.
some good tips here too:
http://www.androidcentral.com/keeping-your-charge-how-improve-battery-life-your-android-phone
i bet using the wifi never sleep trick, as also noted in the link a few posts up, will net a large increase in battery life for most people. interesting to note if it will have an effect on receiving/sending MMS as one of the commenters noted; can someone test?
There are FOUR applications built into the Evo that will use data even if you never turn them on:
Stock
Weather
News
GTalk
Turning these off will add several hours to your battery life. Lowering the frequency of Email updates and GoogleSync will add a little more, and be wary of Live Wallpapers. They use ultralittle processing, but oogles and more of battery life!
thanks for the heads up!
Make sure when you download an app that you go into the settings menu and see if it does background updates. If so, try and set them to the lowest settings. For example, the Weatherbug app took my battery to 50% in two hours because it was running in the background trying to get my location. I went in and changed to settings to only verify my location when I open up the app.
i think i read somewhere in androidforums.com the handcent app kills battery life... i'm not sure but its something you can check on.
No it doesn't. Been running it on my Vogue for months and can go greater than 24 hours no prob. It's made no difference.
-------------------------------------
Sent via the XDA Tapatalk App
I think I have thoroughly conditioned my battery, today with have my brightness set lower.
I am at 47% with just answering texts emails and web browser. I might add i have to use my google voice till the 4th so I have it push to me as soon as someone sends me a txt
But one thing that will drain your battery is homerun battle 3d, that game is f'ing sweet
Just another tip for those experiencing poor battery life...what's your signal strength in the area where you spend most of your day?
When you have poor signal strength, most devices will try to boost their internal radio's power to get a better connection. Have you noticed your device is warm, as if you had just been on a long phone call, even though it's just sitting on your desk?
Poor signal will drain your battery very quickly. I have seen the battery on my TP2 go down to 50% on a full charge after only 4 or 5 hours, without use (other than Exchange sync); where i have great signal strength, my device can sit idle for an entire day and be down to only 75-80%.
Not sure if it's the case on EVO but on my Nexus the Twitter app was set to update every 15 minutes and it was a big drain on the battery. Changed it to every hour instead and it made a noticeable difference.
nachyochez said:
There are FOUR applications built into the Evo that will use data even if you never turn them on:
Stock
Weather
News
GTalk
Turning these off will add several hours to your battery life. Lowering the frequency of Email updates and GoogleSync will add a little more, and be wary of Live Wallpapers. They use ultralittle processing, but oogles and more of battery life!
Click to expand...
Click to collapse
how do you alter the frequency of email updates?
thanks
joey3002 said:
how do you alter the frequency of email updates?
thanks
Click to expand...
Click to collapse
Open your mail>hit menu>more> settings> send & receive
MichaelWestin said:
Open your mail>hit menu>more> settings> send & receive
Click to expand...
Click to collapse
I do not have that option in gmail

How to get better battery life

PEOPLE ARE SAYING GREAT THINGS ABOUT VIBRANT BATTERY LIFE BUT MINE IS NOT THAT GREAT I AM ROOTED SO I SHOULD BE GETTING BETTER BATTERY LIFE. BUT I AM NOT. i have attached a screen shot. is the usage normal?
now my display is 74 percent why is it so dammmm high and i have set on auto brightness i tried the lowest brightness possible it still wont go down.. please help
what is that you are using to see your usge like that?
geocepe said:
what is that you are using to see your usge like that?
Click to expand...
Click to collapse
you mean how do i get to that screen? settings - about phone - battery usage.
thanks. mine is doing the same. ever since i rooted it my battery life is bad
geocepe said:
thanks. mine is doing the same. ever since i rooted it my battery life is bad
Click to expand...
Click to collapse
same with mine i wonder if i unroot it will it make it better
it might i was thinking of doing that myself
Rooting doesn't effect battery life.
Sent from my SGH-T959 using XDA App
You went down 13% in 4 mins -________-. Go exchange your phone, lmao. Or turn off 3G, Accounts & Sync, turn off brightness, and install JuiceDefender. See if that makes a difference. My phone goes down 1% in about 2 hours...
mine barley lasts until evening when I plug it back in... but thats just how these phones are. 1% in 2 hours is very unlikely unless you just don't use it and have everything disabled.
Rooting your phone alone has no advert consequences on your phone's battery life. What you do on your phone does
Sent from my SGH-T959 using XDA App
should i call samsung and tell them about the battery issue?
BigWorldJust said:
You went down 13% in 4 mins -________-. Go exchange your phone, lmao. Or turn off 3G, Accounts & Sync, turn off brightness, and install JuiceDefender. See if that makes a difference. My phone goes down 1% in about 2 hours...
Click to expand...
Click to collapse
So you go 200 hours between charging? I find it hard to believe that you only need to plug it in every 8 days.
ProximaC said:
So you go 200 hours between charging? I find it hard to believe that you only need to plug it in every 8 days.
Click to expand...
Click to collapse
indeed what a troll
Just turning off push email/notifications can have a significant effect on battery run time. I doubled my run time by putting some reasonable settings on my sync intervals.
I refresh my exchange account every 15 mins during peak-time ( 1 hour off-peak ), Tweetdeck every 2 hours, all other accounts hourly. With moderate use I have no problem going 24 hours on a single charge.
Also be on the lookout for misbehaving apps. I had a single dormant streaming app sitting in the background using over 10% of my battery. I kill that app manually after every use.
Sent from Samsung Vibrant
As it's being said before, if you do not use your device you get excellent battery life out of it - might as well have a painted brick on your desk.
Mine lasts a bit more than half a day, but I use mu phone a lot for streaming, texting, browsing, a game sometimes. I think it is about average, I wouldn't sweat it. Still beats my old.nexus one in battery life
Sent from my SGH-T959 using XDA App
My battery last about 24hrs on average. I bought extra batteries and I have run each of them until they hit 1% and then I use and external battery charger, bought of of ebay, came with 2 batteries and a charger for them for 14 bucks, and i do have certian things i do that drain more than others, but for instance i watch a 2 hour movie, and started with a fresh battery, (99%) and when the movie was over I was at 73%, much better than when i first got my phone, but i also still use advance task manager which everyone says is bad for the phone, but i just use it and exempt everything that is used for normal operations, then it only kills the apps i have used and want to kill. now the settings does allow you to do this by each app, but i am just lazy and paid for the app back on my G1 days and it makes killing them in widget form so one click. i just tried to exclude all the things that the phone uses to operate smoothly, and kill the rest of the garbage apps, also you can try a program autostarts, i have it as it suggested it in the app forum sticky, costs a buck, but i used it, not sure how much it helps, but like i said all I have done and how i use all of my battery each and every use now gives me outstanding battery life. No 8 days or anything but still tons better than my G1 and i didn't keep much running like i do on this one. Also turn off auto brightness, and just use the slide if you need to turn it up, dont use live wallpapers and turn it to use 2g only, and then when you need the 3g turn that back on, there is widgets to get for that so its a one click as 3g really drains the battery, so when not in use go to 2g if your not surfing the web or wacthing videos off a site, doing those things will help the life of your battery.
flameinthefire said:
now my display is 74 percent why is it so dammmm high and i have set on auto brightness i tried the lowest brightness possible it still wont go down.. please help
Click to expand...
Click to collapse
That just means that your while your phone was turned on, 74 percent of the total power was used by your display.
Makes sense because you turned your screen on for about 74% of the time.
Try running fix permissions from clockwork. I recently got a boost in power & battery life from doing eugenes v6 mod and the suggested lag.
Vibe the XDApp

Wifi the biggest battery killer?

So I notice that an hour on wifi surfing the web took about 20% or more of thE battery...even playing game doesn't do that to the battery. Anyone experiencing similar thing? Anyone with 3g, is data looking the battery too?
Just keeping wifi turned on is also drains the battery for me.
Check your screen luminosity.it is the biggest battery killer
I'm running the Moto234_eVo_Carbon_V0.3 build and I've noticed that even with the screen off and the phone idle my battery drains at a pretty good rate when compared to WinMo. Any fixes for this?
for me 3g/h draw much power than wifi, almost 1.5x-2x of the wifi surfing..
Screen brightness is easily the biggest batter drain keep brightness as low as possible,
Data connection will hog more than WiFi if you are in an area of weak signal and your device is constantly searching for a signal, when your at home or work using WiFi just turn data off and switch to only 2g networks, set setcpu to screen off 245 245
Sent from my hd2 desire
Screen brightness definitely hits it hard, then wifi and bluetooth, keep em off whenever you are not using them and of course apps running in the background, grab a task killer, if its not needed, it shouldnt be running or else it will use power.
Joe Viterbo said:
I'm running the Moto234_eVo_Carbon_V0.3 build and I've noticed that even with the screen off and the phone idle my battery drains at a pretty good rate when compared to WinMo. Any fixes for this?
Click to expand...
Click to collapse
Get "current widget" from the market to see how much powers are being used. While screen off, my phone only drain about 4~7 mA...
I just came across this. Super detailed analysis of battery usage.
http://ertos.nicta.com.au/publications/papers/Carroll_Heiser_10.pdf
Sent from my HTC HD2
3g draws much more power than wifi. If wifi is available use it over 3g. But like others have said, the screen is by far the biggest battery hog.
anap40 said:
3g draws much more power than wifi. If wifi is available use it over 3g. But like others have said, the screen is by far the biggest battery hog.
Click to expand...
Click to collapse
I don't see how the screen is the biggest energy hog. When I leave my phone uncharged untouched over night and it it displays 7mah on current widget, I lose 40% battery in 7 hours.
jas0nw0ng said:
I don't see how the screen is the biggest energy hog. When I leave my phone uncharged untouched over night and it it displays 7mah on current widget, I lose 40% battery in 7 hours.
Click to expand...
Click to collapse
That's unusual...i lose less than 10% over night...even with bad reception in my room, that didn't kill my battery. Maybe you can try this to test it out. Fully charge before you go to sleep. The next morning, check your battery in setting to see what is using the majority of the battery drain during that period...this might help you find the reason...
If noting else is running, Cell standby will eat the majority of the battery power.
For me, its Angry Birds...it the biggest battey killer
Mafioso said:
For me, its Angry Birds...it the biggest battey killer
Click to expand...
Click to collapse
If you are talking about playing Angry Bird 24/7, then I understand you...but if you are serious, I haven't seen heavy battery drain while playing Angry Bird...but whose got time to check the battery stats while smashing them pigss...
anap40 said:
3g draws much more power than wifi. If wifi is available use it over 3g. But like others have said, the screen is by far the biggest battery hog.
Click to expand...
Click to collapse
You need to reinstall new build and do a task29 and format your SD your battery stats are all over at 7mA you should see 1% per hour
Sent from my hd2 desire
whynot66 said:
You need to reinstall new build and do a task29 and format your SD your battery stats are all over at 7mA you should see 1% per hour
Sent from my hd2 desire
Click to expand...
Click to collapse
Yes thats true, exactly the same in my HD2: 3-7mA = 1% an hour or less
Wow, I installed Mdeejay_eVo_Sense_v_2.3Revolution to see if this build helped on battery life. I charged my phone over night and had a full battery at 11AM (according to the meter) but by 7:30PM, my phone was completely dead. During this time, I had two 5 minute phone conversations and used GPS for 9 minutes. Other than that, the screen was not active and I didn't have WiFi enabled. Is this typical? Doesn't make running Android very practical on the HD2. This is only the second build I've tried but it's not looking very promising.
Joe Viterbo said:
Wow, I installed Mdeejay_eVo_Sense_v_2.3Revolution to see if this build helped on battery life. I charged my phone over night and had a full battery at 11AM (according to the meter) but by 7:30PM, my phone was completely dead. During this time, I had two 5 minute phone conversations and used GPS for 9 minutes. Other than that, the screen was not active and I didn't have WiFi enabled. Is this typical? Doesn't make running Android very practical on the HD2. This is only the second build I've tried but it's not looking very promising.
Click to expand...
Click to collapse
Something is wrong with your build. Try his newer build. They got a new kernel. If that were my habits, my battery would drop by only about 25%. You should install "current widget" from the market. It help you keep track of battery usage. On standby, most people and I got about 3~7mA. If you get a higher mA, that mean something is eating your battery.
Please give Mdj's New Build "Froyo Sense Revolution 1.6" that comes with his new kernel which is suppose to make battery last longer. Hope this helps.
azzzz said:
So I notice that an hour on wifi surfing the web took about 20% or more of thE battery...even playing game doesn't do that to the battery. Anyone experiencing similar thing? Anyone with 3g, is data looking the battery too?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=9276656#post9276656
i hope this enlightens you and yes wifi kills battery but it is not the biggest battery killer and wifi is more harmful to your battery life if it is not connected which means it is constantly searching for a network which sucks the life out of your battery.
I think the wifi modules on the new kernels (Hastarin > 8 & MDJ) are consuming too much power.
I usually got 5 ~ 8 mA in sleeping mode with my wifi turning on on the previous kernels, but now I got 8~60 mA and the battery status is showing that wifi is taking about 30% of the battery. Maybe this is because the 802.1n is enabled by default!

battery usage assessment

I decided to test - on my DHD with Current widget - how much electricity does different hardware parts and softwares use.
I test the battery usage with different brightness settings, wifi and mobile internet download, call, call over bluetooth, music, games, etc. I do it with stock battery, and with LeeDroid 1.4.1 (what is 1.72 based and uses stock kernel) Most tests made in flight mode to make as accurate as possible.
Now, the battery is 1230 mAh what is 1230 mA x 60 minutes = 73800 mAmin. It means if the phone uses 123 mA, than it would last 10 hours (123 mA x 10 h = 1230 mAh). And if the screen uses at least 73 mA, than ( 1230 mAh / 73 mA = 16,85 h ) it won't last more than 16,85 hours with screen on. And it means that only the screen is on on the lowest brightness. So don't expect more than 16,85 hours if you continously browse, play, chat, etc.
Screen:
In flight mode.
I took the lowest number, because the screen uses what it needs, and sometimes some process starts.
brightness---->usage
0%...............73 mA
15%.............76 mA
30%.............92 mA
45%.............107 mA
60%.............125 mA
75%.............149 mA
90%.............172 mA
100%...........191 mA
If nothing else uses much electricity, you can expect 10-15 h screen on, on average brightness.
Music:
In flight mode, screen off.
Normal text - speaker; bold text - headphones; normal text - active speakers
volume------>usage--------->usage---------->usage
0.................49 mA.............52 mA.............50,5 mA
5.................50 mA.............54 mA.............51,5 mA
10...............55 mA.............57 mA.............52,5 mA
15(max)........75 mA.............62 mA...............55 mA
It's enough for about 24 h music with volume on around 10 (in flight mode, screen off).
-Real life test:
Today morning I used my phone for listening music only. It playd music for 6,5 hours and it used 30% battery.
It is 4,6% per hour.
There was no flight mode or other special settings. Of course wifi, bluetooth, etc. were turned off.
It means, that it used 56,8 mA, what is quite good, and a full charge lasts for 21,5 hours with this usage.
Download:
Screen continously on lowest brightness, what uses 73 mA
wifi..............220 mA - 70 mA
3G...............300 mA - 70 mA
GPRS............100 mA - 70 mA
It took 30 sec to download over wifi and 3G, and it downloaded 10% in 6-8 min.
So I recommend wifi. Don't forget it at home!
Navigation:
Maps and 3G and GPRS
It used 350 mA with both settings.
I will test the Locations tomorrow and see if there's a big difference.
Games:
Low brightness.
Need for Speed - Shift ....................... 315 mA
nice...
Sent from my Desire HD using Tapatalk
Great. Going to monitor this using the xda app.
Sent from my Desire HD using XDA App
i'm constantly at 0 screen brightness and my battery won't last
unless you can test at negative values i think any test you perform is useless
sorry for being blunt but there's no nicer way to put it
Good job waiting for the results!
Any updates?
Sent from my Desire HD using XDA App
iAltair said:
Any updates?
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
testing music playing
first post will be updated in about 1 hour
first post updated
jeRrRKKKK said:
i'm constantly at 0 screen brightness and my battery won't last
unless you can test at negative values i think any test you perform is useless
sorry for being blunt but there's no nicer way to put it
Click to expand...
Click to collapse
Either you can't be arsed reading around to get optimum battery usage out of your DHD (wifi off when not in use, battery calibration etc) or you have a hardware fault! My battery easily lasts 15-18 hours of heavy usebetween charges (currently at 78% after 11 hours unplugged albeit with moderate use)
ghostofcain said:
Either you can't be arsed reading around to get optimum battery usage out of your DHD (wifi off when not in use, battery calibration etc) or you have a hardware fault! My battery easily lasts 15-18 hours of heavy usebetween charges (currently at 78% after 11 hours unplugged albeit with moderate use)
Click to expand...
Click to collapse
I'd relay like to know how you have achieved that kind of usage with heavy usage, I can get my DHD to last the day, but its always giving me 15% or worse warnings by 11pm after being unplugged at 9am. I don't use it excessively, bit of browsing, screen on auto, bit of music. The battery life has gotten way better since I got the phone. Does calibration name that much difference, I run the phone basically right the way down every day as it is.
Just be nice to use it as much as id like to (aka not use it and worry about it dying) and still last the day.
After doing the battery reset, I finaly got through the hole day with heavy use, without worying that my battery runs out. If you havent done it yet, do it! Tried diffrent methods, but the one that worked was the one that HTC recomended. Charge with phone on for 8 houres, unplugg charger, shut down, charge for one houre, unplug, turn on, wait two minutes, shut down and charge for one houre. Remember to disable the fastboot befor shutting down phone.
Sent from my Desire HD using XDA App
gamesmachine said:
I'd relay like to know how you have achieved that kind of usage with heavy usage, I can get my DHD to last the day, but its always giving me 15% or worse warnings by 11pm after being unplugged at 9am. I don't use it excessively, bit of browsing, screen on auto, bit of music. The battery life has gotten way better since I got the phone. Does calibration name that much difference, I run the phone basically right the way down every day as it is.
Just be nice to use it as much as id like to (aka not use it and worry about it dying) and still last the day.
Click to expand...
Click to collapse
Don't tell me!
I finish my morning job at noon (I start 5:30) and it's around 20% left.
I'm thinking of buying an 5000 mAh external battery. Than I would not worry about using as much as I want : )
Music seems to be using quite low of power.
Sent from my Desire HD using XDA App
gamesmachine said:
I'd relay like to know how you have achieved that kind of usage with heavy usage, I can get my DHD to last the day, but its always giving me 15% or worse warnings by 11pm after being unplugged at 9am. I don't use it excessively, bit of browsing, screen on auto, bit of music. The battery life has gotten way better since I got the phone. Does calibration name that much difference, I run the phone basically right the way down every day as it is.
Just be nice to use it as much as id like to (aka not use it and worry about it dying) and still last the day.
Click to expand...
Click to collapse
There are numerous posts in these forums where people have doubled their battery life by calibration, I won't claim any such results as I fiddle that much that I can't really pinpoint one factor, so yes it can I believe what is happening is that as the battery improves with charge cycles the dhd is assuming it's capacity remains the same so with calibration you are resetting the max charge level
first post updated with Download battery usage
I bought a Mugen 1300 mA battery...it's ever worse that the original one! :-(
Abies78 said:
I bought a Mugen 1300 mA battery...it's ever worse that the original one! :-(
Click to expand...
Click to collapse
yeah, last time I found a site where they test batteries, and as I remember only the stock batteries had as much power as it says.
I found it after a lil search:
http://batteryboss.org/
as you can see, it's not always the truth what is written on these custom batteries
Ran the HTC recommended calibration, still no improvement, if anything its worse. Android system process is eating my battery and I don't know why, 60% usage and my batt went from full to 15% warning in 4h
Sent from my Desire HD using XDA App
gamesmachine said:
Ran the HTC recommended calibration, still no improvement, if anything its worse. Android system process is eating my battery and I don't know why, 60% usage and my batt went from full to 15% warning in 4h
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
woa
what ROM do u use?
gamesmachine said:
Ran the HTC recommended calibration, still no improvement, if anything its worse. Android system process is eating my battery and I don't know why, 60% usage and my batt went from full to 15% warning in 4h
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
Can you list down the items under "Android System Process"? I am using my phone roughly the same way you mentioned on your other post but I'm at 8-hours with 80% left. Maybe you have an app doing the damage.

[TIPS] Juice Defender, Why its good and bad

Reading through threads I see lots of people saying JD and similar apps are good and lots saying they are bad. This is quite confusing for someone who just wants to get good battery life. In my experience I have gone from finding it good to finding it bad. I will try and explain why this occurs so that people are able to decide if it will be worthwhile for them.
First install Battery Monitor Widget and find out what sort of drain your battery is experiencing every hour.
With a stock rooted G2 with data connection on continually (no wifi) I was getting around 80-150 mA which explains why it would not last longer that about 16 hours. Most of this drain seems to occur from data connections. After installing JD or something similar the drain can be reduced to around 50 mA. Which is great, suddenly you get the claimed 1.5 to 2x battery life. JD seems great.
But after you install a good ROM and custom kernal, remove or freeze all the apps that keep using your data connection unnecessarily and install Better Battery stats you observe that JD stops the phone going into a proper deep sleep. If you dump it the drain on the phone drops to very low numbers usually under 20mA sometimes 5mA or even 2mA. This means you use around 1-3% of the battery life of the phone overnight with no changes. Now your phone can last days between charges. Note this is with Data or Wifi connections turned on and Sync active always.
Summary:
On a badly set up phone JD improves battery life (for the lazy)
On a well set up phone JD worsens battery life (takes some time)
Note: I got the best results using Speedmods kernal but I have no reason to think that other kernals could not get similarly low battery drains.
Thanks for sharing your observations. I have juice defender and have had similar findings. The wake locks jd causes play into the aos bug of the phone which is why it can make things worse on a well set up phone (the extra drain from the wake locks outweighs the savings from turning the data connection off when it's not in use). If not for the aos bug it would probably be good in all cases. I had noticed this in my testing and am glad to see I'm not the only one.
Sent from my GT-I9100 using xda premium
Thanks for sharing your observations.
If I had seen your post much earlier than I wouldn't have to buy JD. Anyway, I have gone through the hard way, and learnt how to keep my phone organized and minimized rouge apps issue. JD is pretty much useless now.
IMHO, I think Battery monitor widget pro seems to be a much better buy
Thanx for this helpful info!
BTW, kernel not kernal
I do not have a lot of widgets and sync as little as possible. Mail sync is only on demand (when I have time to read it), and Weather is every 6 hour (disabled in night time).
So my battery live is good ½% standby and with normal use it can easily last a full day (no gaming, just Internet, Talk, SMS).
I decided to try JD in order to save even more juice, but JD ended up using more battery than it saved me!
So I can confirm that JD is good for the "lazy user" and bad if your aware of your sync. and how your apps behave.
What do u mean by dumping? You said if you dump it and the drain goea away? Im a bit confused
Sent from my brilliant Viper skinned Apple iPad 2 using the superior Tapatalk Premium
best way to save battery overnight are, disable all internet connection including Wifi, switch to 2G, kill all task then have a sweet dream till next sun rises
KurskS said:
What do u mean by dumping? You said if you dump it and the drain goea away? Im a bit confused
Click to expand...
Click to collapse
By 'dump' I just meant uninstall JD. If you uninstall JD your phone will be able to deep sleep properly provided it is set up well and you actually save more battery.
foxcheng said:
best way to save battery overnight are, disable all internet connection including Wifi, switch to 2G, kill all task then have a sweet dream till next sun rises
Click to expand...
Click to collapse
Sure you can do that, but it's not necessary. I leave wifi and 3g on and still have drain of 5mA all night. I wake up and have lost almost no battery. The same applies for when the phone is idle during the day.
razar77 said:
Sure you can do that, but it's not necessary. I leave wifi and 3g on and still have drain of 5mA all night. I wake up and have lost almost no battery. The same applies for when the phone is idle during the day.
Click to expand...
Click to collapse
What kernel , Rom and apps (that sync) are you using?
Sent from my GT-I9100 using Tapatalk

Categories

Resources